The following problems can occasionally bother your cockscomb. For solutions, when possible, click on causes on the right.

Problems of Cockscomb
Symptom	Probable Cause
Flowers yellow-green; deformed; shoots spindly	Aster Yellows, A Bacterial Disease, pull the plant.
Black spots with spore bodies on leaves	Leaf Spot, A Fungal Disease
Leaves stippled, yellowing or bronze; dry out and drop may be webbing visible; sometimes galls form on leaves	Spider Mites
Plant actually disappears	Deer